Table 2 Regression models for substance use in relation with family living arrangement and parental socioeconomic group (ESCAPAD survey 2017, metropolitan France; PR: Prevalence ratios)

Females vs Males

1.11 (1.07–1.15)

1.11 (1.07–1.15)

1.97 (1.88–2.07)

1.98 (1.88–2.08)

2.14 (1.98–2.32)

2.15 (1.98–2.32)

18 years vs 17 years

1.30 (1.23–1.37)

1.30 (1.23–1.36)

1.19 (1.11–1.28)

1.21 (1.12–1.30)

1.56 (1.41–1.74)

1.58 (1.43–1.75)

 Intact family

1.0

1.0

1.0

1.0

1.0

1.0

 Parent-stepparent

1.78 (1.69–1.87)

1.76 (1.67–1.85)

1.27 (1.18–1.37)

1.29 (1.20–1.40)

2.03 (1.81–2.28)

2.05 (1.83–2.31)

 Father single parent

1.69 (1.55–1.84)

1.67 (1.54–1.82)

1.29 (1.14–1.45)

1.32 (1.17–1.48)

2.31 (1.95–2.74)

2.35 (1.98–2.78)

 Mother single parent

1.54 (1.40–1.61)

1.52 (1.45–1.59)

1.11 (1.04–1.19)

1.15 (1.07–1.23)

2.13 (1.93–2.35)

2.18 (1.97–2.41)

 Shared custody

1.50 (1.41–1.62)

1.51 (1.41–1.62)

1.35 (1.24–1.48)

1.34 (1.22–1.46)

1.81 (1.56–2.10)

1.79 (1.55–2.08)

 Other or unknown

1.83 (1.73–1.93)

1.81 (1.71–1.91)

1.55 (1.45–1.67)

1.59 (1.48–1.71)

2.41 (2.16–2.69)

2.45 (2.19–2.74)

 Very privileged

1.0

1.0

1.0

1.0

1.0

1.0

 Privileged

1.15 (1.05–1.26)

1.10 (1.01–1.20)

0.97 (0.88–1.07)

0.95 (0.86–1.05)

1.18 (0.99–1.40)

1.11 (0.93–1.32)

 Intermediate

1.23 (1.13–1.34)

1.16 (1.07–1.26)

0.95 (0.86–1.04)

0.92 (0.84–1.01)

1.17 (0.99–1.38)

1.07 (0.91–1.26)

 Modest

1.31 (1.20–1.42)

1.20 (1.11–1.31)

0.86 (0.78–0.94)

0.83 (0.76–0.91)

1.09 (0.93–1.29)

0.96 (0.82–1.13)

 Disadvantaged (unknown or no answer)

1.34 (1.22–1.47)

1.19 (1.09–1.31)

0.72 (0.64–0.81)

0.68 (0.60–0.76)

1.00 (0.83–1.22)

0.83 (0.68–1.00)